linux-toradex.git/drivers/iommu/intel_irq_remapping.c, branch v4.9.43

Merge tag 'for-linus-20160216' of git://git.infradead.org/intel-iommu

2016-02-16T16:04:06+00:00

Pull IOMMU SVM fixes from David Woodhouse:
 "Minor register size and interrupt acknowledgement fixes which only
  showed up in testing on newer hardware, but mostly a fix to the MM
  refcount handling to prevent a recursive refcount issue when mmap() is
  used on the file descriptor associated with a bound PASID"

* tag 'for-linus-20160216' of git://git.infradead.org/intel-iommu:
  iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts
  iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG
  iommu/vt-d: Fix mm refcounting to hold mm_count not mm_users

iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG

2016-01-13T23:30:49+00:00

This is a 32-bit register. Apparently harmless on real hardware, but
causing justified warnings in simulation.

Signed-off-by: CQ Tang 
Signed-off-by: David Woodhouse 
Cc: stable@vger.kernel.org

x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros

2015-12-19T10:49:55+00:00

Those are stupid and code should use static_cpu_has_safe() or
boot_cpu_has() instead. Kill the least used and unused ones.

The remaining ones need more careful inspection before a conversion can
happen. On the TODO.

Signed-off-by: Borislav Petkov 
Link: http://lkml.kernel.org/r/1449481182-27541-4-git-send-email-bp@alien8.de
Cc: David Sterba 
Cc: Herbert Xu 
Cc: Peter Zijlstra 
Cc: Matt Mackall 
Cc: Chris Mason 
Cc: Josef Bacik 
Signed-off-by: Thomas Gleixner

iommu/vt-d: Fix return value check of parse_ioapics_under_ir()

2015-11-02T10:57:31+00:00

The function returns 0 on success, so check for the right
value.

Signed-off-by: Joerg Roedel

iommu/vt-d: Propagate error-value from ir_parse_ioapic_hpet_scope()

2015-10-23T10:00:54+00:00

Propagate the error-value from the function ir_parse_ioapic_hpet_scope()
in parse_ioapics_under_ir() and cleanup its calling loop.

Signed-off-by: Joerg Roedel

iommu/vt-d: Adjust the return value of the parse_ioapics_under_ir

2015-10-23T09:53:49+00:00

Adjust the return value of parse_ioapics_under_ir as
negative value representing failure and "0" representing
succcess. Just make it consistent with other function
implementations, and we can judge if calling is successfull
by if (!parse_ioapics_under_ir()) style.

Signed-off-by: Baoquan He 
Signed-off-by: Joerg Roedel

iommu/vt-d: Use cmpxchg16b to update posted format IRTE atomically

2015-10-15T14:21:55+00:00

If IRTE is in posted format, the 'pda' field goes across the 64-bit
boundary, we need use cmpxchg16b to atomically update it. We only
expose posted-interrupt when X86_FEATURE_CX16 is supported and use
to update it atomically.

Signed-off-by: Feng Wu 
Signed-off-by: Joerg Roedel

iommu/vt-d: Switch from ioremap_cache to memremap

2015-10-14T13:22:06+00:00

In preparation for deprecating ioremap_cache() convert its usage in
intel-iommu to memremap.  This also eliminates the mishandling of the
__iomem annotation in the implementation.

Cc: David Woodhouse 
Signed-off-by: Dan Williams 
Signed-off-by: Joerg Roedel

iommu/vt-d: Access iomem correctly

2015-08-13T17:49:56+00:00

This fixes wrong accesses to iomem introduced by the kdump
fixing code.

Signed-off-by: Joerg Roedel

iommu/vt-d: Fix leaked ioremap mapping

2015-08-03T14:22:38+00:00

iommu_load_old_irte() appears to leak the old_irte mapping after use.

Cc: Joerg Roedel 
Signed-off-by: Dan Williams 
Signed-off-by: Joerg Roedel